The arpeggio pattern is fully customizable:Key 1..Key 4 are the keys that are currently being played, Key 1 being the lowest in pitch. Random Key is a random pick of one of these keys. You can pick one (or no) key for each step.Octave Up / Octave Down can be checked to transpose the note.Accent can be checked to make the note a bit louder. See the Accent knob.

The following controls are available:

Steps: The number of steps in the pattern. The maximum value is 32.

Rate: The speed at which the steps are played. It can be 'normal' notes like 1/16 or triplets.

Accent: Steps which have the Accent box checked play a bit louder. This knob determines the amount added to the note velocity.

Gate: The (relative) note duration. You can turn this down to make the note sound mode staccato.

Fixed Velocity: Ignore the velocity of the incoming notes, and use a fixed value (90) instead.

Hold: Ignore incoming note-off messages, so the arpeggio keeps playing when you've released the keys. The notes will be stopped when you play a new chord. This feature can make playing the arpeggiator using a MIDI keyboard easier. You can push and release the sustain pedal to stop the arpeggiator.